by Adrienne Williamson , Medical Xpress HLA-I hyperexpression is present in the islets of double AAb+ and T1D donors. (A and C) Representative immunofluorescence images from islets (A) and exocrine tissue (C) showing normal (top), elevated (middle), and hyperexpression (bottom) of HLA-I. The right panels display heatmaps based on the relative fluorescence intensity unit of...